Here's a collection of vero (stripboard) and tagboard guitar and bass effect layouts that we have put together covering many classic and popular effects in growing numbers. Many of these have been posted on freestompboxes.org, so check that site out for great discussions on building your own effect pedals. Enjoy the builds and please also visit us on Facebook and Twitter

21 comments:

great job on this one alex. that video is awesome too, it just sounds awesome. the other pedal really added something special to the MPF-1, i wonder what the other pedal is, i could barely make it out.

Thank you very much Alex for this layout!I've just finished it and it works from the first try on clean setting, but the overdrive setting was very weak. Looking at the schematic (http://www.synfo.nl/servicemanuals/Maestro/MAESTRO-PARAMETRIC-FILTER_SERVICE_MANUAL.pdf), I found 2 little errors in your layout:1. the 22uF must be 2.2uF2. the diodes must be grounded through a 2.2uF, not directly as you did3. the IC is not a CD4007n, it must be a CD4007AE (as in the original schematic) or, more easy to find, CD4007UBE.

After these mods, the overdrive part sounds very good (as in the clips from Youtube) and, more important, it's the BEST OVERDRIVE that I heard!!!

Hi Bre.I've used this schematic:http://s158.photobucket.com/user/PrehistoricFuzz/media/66D11D96-A714-456C-969E-59695456EDEB-2620-0000034CD1E391CC.jpg.htmlDid you use a CD4007UBE?If you say it sounds more like the original, I'll add them to the layout.Thanks for the help! :)

The schematic you have used has some minor errors: the ones that I mentioned above :) I didn't check yet all the schematic from the service manual of MPF (which i consider to be correct) against the one you used or against your layout, but I will do I soon I will have some time.I didn't find anywhere informations about CD4007N (it seems that it doesn't exist) you mentioned in your layout and CD4007AE from the original schematic is unavailable, so I found the closest to it is CD4007UBE. Anyway, it works great :)

how difficult would it be to allow for external/expression/CV control of the dual frequency pot?... is it as easy as changing the on-board dual pot to a jack and plugging an exp w a dual pot at the treadle into the just-installed jack? it's got to be more complicated than that, especially with a dual pot. I'd love to be able to sweep through the frequency range of this pedal.

I built it, too. It works really well, but the overdrive is still not as strong as what I'm hearing in the YouTube demos... Even with the updated changes. Is there anything else I can try swapping out to get it to sound more like the original?

It's not supposed to be a strong overdrive.It's supposed to be used after a fuzz or an overdrive (like in the video).Does it sound weaker than the one in this video?https://www.youtube.com/watch?v=w4Qzptnrjgc

Built it and and I´m enjoying it. But there is an issue with the frequency pot, which only works audibly in the first quarter of turn (from 5kHz to 50 Hz). The rest of the travel it stays around 50 Hz. Anybody else experiencing this problem? Cheers

Yeah, I had the same problem. It turns out the Frequency pot is misnumbered; it's backwards compared to the offline wiring guide. Swap terminals 1 and 3, and swap terminals 4 and 6, and everything should work properly.

A number of people have asked me to do a build guide for one of these effects, but I noticed the other day that one of the guys here (timmy)...

Note

Not all these layouts are verified and some are put together from unverified schematics. So if you have good luck, or bad luck for that matter, then please let me know by dropping a comment in the topic. Thanks.

DMCA statement: Unless otherwise noted, all media used within this site with the exception of linked youtube videos, is the intellectual property of the author, including but not limited to photographs, schematics and interpreted layout diagrams. Manufacturers and product names are mentioned solely for circuit identification, and where applicable their trademarks are the property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement is implied.